I'm sorry but I could not find any information about the part number 140883: HUB,COMPL,3500#141472 from Tracker. Since it mentions 3500 it does make me think it is for a 3,500lb axle but you will want to check your bearings and grease seal to ensure the Hub # AKIHUB-545-35-EZ-K is the correct replacement for your spindle.
Inner bearing: # L68149 (1.378" inner diameter)
Outer bearing: # L44649 (1.063" inner diameter)
Grease Seal: # 58846 (1.719" inner diameter)
If you have a different... view full answer...